Simple wall mounts for mounting with countersunk M4 screws. Base plate is connected to wall mount using M3x12 mm (may be longer) into M3x4x3 inserts.
Prints easily without supports. The mount is asymmetric, print one in the given orientation, another one mirrored in your slicer.
Corresponding baseplate is here: https://www.printables.com/model/436094
If you want to modify the grid depth, distance, or hanger height: FreeCad sources are included, change the parameters in the spreadsheet.
The author marked this model as their own original creation.